July 24 (Reuters) - U.S. stock index futures rose on Tuesday and the Nasdaq looked poised to strike a fresh record high after Google's parent Alphabet shattered profit expectations and powered a rally among high-growth technology companies.

Nasdaq emini futures were already trading in record territory and their S&P 500 counterparts were at their highest since early February as a robust earnings season helped investors shake off concerns over a U.S.-China trade war and a strengthening dollar.

Shares of Alphabet, part of the so-called FAANG group, jumped 4.3 percent in premarket trading and were set to scale a record high after the online search giant's quarterly results trounced Wall Street targets.

Tech stocks have led the recovery from the early 2018 tumult that dragged U.S. stocks into a correction and have helped erase nearly all of the wider market's losses. Nasdaq has struck repeated record highs this summer, and the S&P 500 emini futures on Tuesday were trading within 2 percent of their late-January record.

Lockheed Martin jumped 2.7 percent and Biogen surged 7.1 percent after both companies topped quarterly profit expectations and raised their forecasts for the rest of the year.

The strong reports helped soothe nerves over the possible impact of a China-U.S. trade war and a strengthening dollar on corporate results. Analysts' forecasts for second-quarter profit growth are now at 22 percent, up from 20.7 percent at the start of the month, according to Thomson Reuters I/B/E/S.

Harley-Davidson, at the center of the brewing trade war between the United States and the European Union, rose 3.1 percent after its profit beat estimates, although it warned new EU tariffs would squeeze margins.

Eli Lilly jumped 3.4 percent after the company said it would take its animal health unit public and posted a better-than-expected quarterly profit. (Reporting by Amy Caren Daniel in Bengaluru; Editing by Sriraj Kalluvila)